Window-sash balance.



Patented Uct. 24, 1899.

ANGE.

Y.Lc, .UAS La L u AMA MAM s M m J.0 u m@ W 2 Sheets-Sheet I.

(No Model.)

Nn. 635,332. Patented Oct. 24, |899. J. M. MALLUY.

WINDDWSSH BALANCE.

l (Application led Aug. 30, 189B.) (llo Model.) 2 Shankar-Sheet 2,

Nrrnn TATS Ferca.

ATENT Josnrn M. MALLoY, or PniLIPsBURe, PENNSYLVANIA.

WIN Dow-'sAsl-i BALANCE.

SPECIFIATIN foining part of Letters Patent No. 635,332, dated October 24, 1899. Application filed August 30, 1898. Serial No. 689,888. (No model.)

To @ZZ whom t may con/cern,.- j

Be it known that I, JOSEPH M. MALLoY, a citizen of the United States, residing at Philipsburg, in the county of Centre and State of Pennsylvania, have invented acertain new and useful Improvement iu Window-Sash Balances, of which the following is a specilication. 4 d

My invention relates to a new and useful improvement in combined window-sash balances and burglar-alarms, and has for its object to provide exceedingly simple andk effective devices of this description which when applied to a window will facilitate the raising and lowering of the sash by counterbalancing the saine without the use of ropes or weights;

and a further object of my invention is to so f construct and combinea burglar-alarm with the balancing mechanism as to cause the same to be sounded should the sash be moved in either direction, and yet permit the cutting out of the alarm whenthe window is to be raised or lowered from the inside.

, With these ends in view this invention consists in the details of construction and combination ofvelements hereinafter set forth and then specifically designated by the claims.

In order that those skilled in the art to which this invention appert-ains may understand how to make and use .the same, the construetion and operation will now be described in detail, referring to the accompanying drawings, forming a part of this specification, in whichj Figure l is an elevation of a portion of a window and sash, a part thereof being broken away so as to illustrate the application of my improvement thereto; Fig. 2an enlarged view of my improvement as applied to a window frame and sash; Fig. 3, asection of the springdrum; Fig. 4, a det-ail view of a portion of the adj usting-plat-e, showinga swinging latch for holding the drum againstrotation prior to the insertion of the sash; and Fig. 5 is an enlarged View showing the construction and arrangement of the burglar-alarm and its connection with the balancing mechanism.

In carrying out my invention as here embodied, A represents an escutcheon plate which is secured to the window-frame within the groove in which the sash B slides, and this plate has attached thereto the ad justin g-plate C b means-of the screws D which are swivception of the fiattened ends of the spindle G.

The spring-drum His mounted upon this spindle, so as to freely revolve thereon,and one end vof the spring I is attached to said spindle, while the outer end thereof is attached to the drum,' as indicated at J, so that when the drum is revolved in one direction the spring will be wound andi-hereby store a certain amount of force, which will become active when the drum is released,-causing the latter to revolve in a reversed direction. The sash B has secured along the edge thereof a rack4bar F, which is adapted-to mesh with the gear K, carried vby the drum, and in practice it is preferable that this arrangement shall be duplicated upon the opposite side of the sash in or'der that the action of the device may be balanced. Fromthis description it will be obvious that a sash thus fitted will' to a certain extent be counterbalanced by the spring I, so that it may be raised without undue eX- ertiou or may be lowered, vwhich latter movement will wind the spring by revolving the drum, and thus store the power for assisting in again raising the sash. The screwsD furnish sufficient adjustment to bring the gear K into proper mesh with the rack-bar F, and

` should at anytime the sash shrink or swell the gear may be again adjusted in this manner. A latch L is secured upon the turn-post M,

'which is journaled in the plate C, and the outer end of this post. passes lthrough the escutcheon-plate A and is slotted for the reception of a screw-driver. The object of this latch is to hold the drum by engagement with the gear-teeth prior 'to the insertion of the sash within a window, and thus facilitate the winding of the spring to the proper tension before said sash is placed in position.; but after the rack-bar is entirely in mesh with the gear this latch is swung out of engagement with the gear-teeth, thereby freeing the drum, so that it may be revolved in either directionwith theraising or lowering of the sash. d

O represents a bell, which is secured upon the hollow shank P by means of the radial arms Q, and this shank is journaled in a bushing R. Passed through this shank is the spindle S, the inner portion thereof being journaled in a bracket T, and a pinion U is secured upon the inner end of this spindle and meshes with the gear K, so that any movement of this gear will cause the pinion to revolve, and on account of the difference in size between the gear and the pinion the latter will revolve at a high rate of speed. The outer end of the spindle S carries the clappers V, the arms of which are of spring material, so that when the spindle is revolved these clappers will strike the lugs W, formed upon the bell, thus causing the bell to ring rapidly, as is well understood.

The shank I) is provided with a liange at its inner end, as indicated at X, and interposed between this ilange and the inner end of the bushing R is a coil-spring Y, the action of which is to normally hold the shank in the position 'shown in Fig. 5; but this spring will permit of lthe shank being drawn outward to a limited degree, which movement will carry the pinion U out of engagement with the gear K, and thereby cut out the alarm, so that the sash may be then raised and lowered without sounding an alarm, from which it is obvious that a person upon the inside ofthe sash may raise and lower the same without sounding the alarm simply by `grasping the bell and drawing it outward sufficiently to carry the shank and the spindle S outward to disengage the pinion from the gear, when the sash may be raised and lowered in the ordinary manner. The releasing of the bell will permit the spring Y to return the parts to their normal position and in so doing reengage the pinion U`with thc gear. This feature of my improvement makes a most eifective burglaralarm, since the same cannot be tampered with from the outside, while the alarm must be sounded by any movement of the sash in either direction, thus affording perfect protection to the occupants of the room.

The cost of my improvement is comparatively small, and it is readily applied to a window, while it has many advantages oveiI the ordinary ropes and Weights and accomplishes the result of balancing the sash equally as well.

Having thus fully described my invention, what I claim as new and useful is- 1. In combination, a rack carried by a sash, a drum, a gear-wheel, and a spring, a spindle for supporting the drum, a spindle carrying a gear taking motion from the gear of the drum, a bell and clappers carried by the spindle, substantially as described.

2. In combination, a sash, a rack, a gearwheel meshing with the rack,a drum,a spring, a gear-wheel meshing with the first-named gear-wheel, a spindle, clappers carried by the spindle, means for allowing the spindle to be drawn out to disengagc the gear-wheels, and a spring for holding the parts normally in engagement, substantially as described.

In combination, a sash, a rack, a gearwheel meshing with the rack, a dru1n,a spring, a gear-wheel meshing with the first-named gear-wheel, a spindle, clappers carried by the spindle, means for allowing the spindle to be drawn out to disengage the gear-wheels, a latch for engaging the teeth of the gear-wheel, and a spring for holding the parts normally in engagement, substantially as described.

4. In combination with a sash-balance of the character described, a burglar-alarm consisting of a spindle, a gear carried thereby meshing with the gear of the balancing mechanism, clappers carried by the outer end of the spindle, a bell properly arranged relative to said clappers, a shank journaled around said spindle and carrying the bell, and a spring for holding the shank in its normal position but permitting its outward movement, as specified.

In testimony whereof I have hereunto affixed mysignature in the presence of two subscribing witnesses.

JOSEPH M. MALLo'Y.

Witnesses:

FRANK F. IRWIN, WM. E. IRWIN. 

